Four-station rotary welding machining equipment for welding

Abstract

The invention relates to the technical field of welding, and discloses four-station rotary welding processing equipment for welding, which comprises a mechanical arm provided with a welding gun, a laser welding cabinet and a welding tool cabinet, the tool cabinet is rotatably provided with a turntable capable of rotating by 180 degrees, and the surface of the turntable is provided with an isolation plate which divides the turntable into a front side and a rear side; four tool mechanisms are symmetrically arranged, the front side is used for feeding and discharging, and the rear side is used for automatic welding. The equipment is provided with a dust collection mechanism, the dust collection mechanism comprises a height-adjustable cross beam, a dust collection barrel and a turnover telescopic dust collection head, the position of the dust collection head is adjustable, collision with a welding gun is avoided, welding smoke is sucked away, the welding position is cooled, the welding efficiency and quality are improved, and the safety of operators is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a four-station rotary welding processing equipment for welding. Background Art

[0002] In the field of mechanical manufacturing and processing, welding, as an important connection process, is widely used in the production process of various metal components. In order to improve welding efficiency and product quality, automated, multi-station welding equipment has gradually become the mainstream direction of industry development. Among them, four-station rotary welding processing equipment has attracted much attention because it can realize continuous processing of multiple workpieces and improve production efficiency.

[0003] However, the existing four-station rotary welding equipment still has some shortcomings in practical applications. First, the loading and unloading of workpieces and the welding process are usually not carried out synchronously. Operators need to wait until the welding is completed before loading and unloading, which increases the standby time of the equipment and affects production efficiency. Secondly, if the smoke and harmful gases generated during the welding process cannot be removed in a timely and effective manner, it will not only affect the welding quality, but also pose a threat to the health and safety of the operators.

[0004] Existing dust suction devices are often fixed in a specific position, lacking flexibility and unable to be adjusted according to the location of the welding point. This design easily causes the dust suction head to collide with the welding gun, affecting the continuity of welding work and the service life of the equipment. In addition, when the dust suction head is too far away from the welding point, it cannot effectively remove the smoke generated by welding, nor can it cool down the welding part in time, which may lead to reduced welding quality and deformation of the workpiece.

[0005] After welding, the temperature of the workpiece is still high. If it cannot be cooled down quickly, the operator may get burned due to the high temperature when unloading the material, which poses a safety hazard. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides a four-station rotary welding processing equipment for welding, which can simultaneously realize the loading and unloading and welding operations of the workpiece, and is equipped with an adjustable dust suction device to prevent the dust suction head from colliding with the welding gun, and effectively removes smoke and dust and cools the welding part to improve production efficiency and welding quality and ensure the safety of operators.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A four-station rotary welding processing equipment for welding, comprising a mechanical arm, a laser welding cabinet and a welding tool cabinet, wherein a welding gun is installed at the end of the mechanical arm, and the laser welding cabinet is placed on one side of the mechanical arm and connected to the welding gun through a hose; The welding tooling cabinet is fixedly placed in front of the robot arm, a turntable is rotatably mounted on the upper surface of the welding tooling cabinet, an isolation plate is transversely arranged on the surface of the turntable, the isolation plate divides the turntable into two semicircles, four tooling mechanisms are symmetrically arranged on the surface of the isolation plate, two tooling mechanisms are grouped together and respectively placed on both sides of the isolation plate, and a protective lens is embedded on the surface of the isolation plate; A dust collection mechanism is also fixedly arranged on the upper surface of the welding tool cabinet, and the dust collection mechanism includes two vertically arranged columns, the two columns are respectively placed on both sides of the turntable, a crossbeam is installed above the two columns, the crossbeam is suspended above the turntable and parallel to the position of the isolation plate during welding, a dust collection cylinder is vertically fixed to the center of the crossbeam, and a horizontal cylinder is arranged at the bottom of the dust collection cylinder; Both ends of the horizontal cylinder are provided with a rotating and telescopic mechanism, the rotating and telescopic mechanism comprises a rotating cylinder arranged horizontally, a docking cylinder is arranged vertically at the end of the rotating cylinder, a dust collecting head is slidably installed at the front end of the docking cylinder, and the dust collecting head corresponds to the tooling mechanism; Two telescopic control mechanisms for controlling the telescopic movement of the dust collector head are symmetrically arranged on the upper surface of the crossbeam.

[0008] Furthermore, a slide groove is provided on the surface of the column, and locking bolts are screwed on both ends of the beam. The locking bolts pass through the slide groove, the top of the dust collection cylinder is connected to the dust collection device, and a limit plate is provided on the surface of the dust collection cylinder. The limit plate is fixed to the center of the upper surface of the beam by bolts.

[0009] Furthermore, the front surface of the horizontal cylinder is symmetrically provided with protrusions, the inner side of the protrusions rotates through a rotating shaft, the rotating shaft is parallel to the axis of the horizontal cylinder, a second gear is provided at one end of the rotating shaft close to the dust collection cylinder, and a first gear is provided at the other end of the rotating shaft.

[0010] Furthermore, a control cylinder is vertically fixed on the front surface of the dust collector cylinder, the control cylinder is placed under the crossbeam, and a tooth plate is installed downward at the output end of the control cylinder, and the tooth plate is respectively engaged with the two second gears.

[0011] Furthermore, the rotating cylinder is connected to the inside of the horizontal cylinder, a gear ring is provided at the end of the rotating cylinder, the gear ring is meshed with the first gear, a telescopic cylinder is slidably installed at the end of the docking cylinder, the dust collector head is fixed at the end of the telescopic cylinder, and the dust collector head is trumpet-shaped.

[0012] Furthermore, bosses are provided at both end portions of the docking tube, and fixing rods are symmetrically provided on the side of the telescopic tube surface away from the cleaner head, the fixing rods pass through the bosses, a spring is sleeved on the surface of the fixing rods, and the spring is placed between the telescopic tube and the bosses.

[0013] Furthermore, an ear plate is welded at the center of the upper surface of the telescopic cylinder, and the telescopic control mechanism includes fixed wheels fixed on both sides of the crossbeam, the fixed wheels correspond to the positions of the telescopic cylinder, and a pull rope is connected to the surface of the ear plate.

[0014] Furthermore, a control motor is fixed to the crossbeam, a friction control wheel is installed at the output end of the control motor, the friction control wheel is placed between the two fixed wheels, the friction control wheel is in contact with one of the fixed wheels, the pull rope passes between the fixed wheel and the friction control wheel, and is tangent to the fixed wheel and the friction control wheel respectively, and the pull rope is squeezed by the fixed wheel and the friction control wheel.

[0015] Furthermore, the tooling mechanism includes a support platform and a pneumatic pressing plate, a tooling seat is arranged on the top of the support platform, and an output end of the pneumatic pressing plate is placed above the tooling seat.

[0016] The present invention provides a four-station rotary welding processing equipment for welding. It has the following beneficial effects: First of all, this equipment realizes the synchronization of loading and unloading of workpieces and the welding process. By adopting a turntable design that can rotate 180 degrees, the staff can install the workpieces to be welded on the two tooling mechanisms on the front side, while the tooling mechanism on the rear side performs automatic welding with the cooperation of the mechanical arm and the welding gun. This design reduces the standby time of the equipment, greatly improves production efficiency, and solves the problem of low production efficiency caused by the inability to load and unload and weld at the same time in existing equipment.

[0017] Secondly, the equipment is equipped with an adjustable dust suction mechanism. The dust suction mechanism includes a height-adjustable crossbeam and dust suction cylinder, as well as a rotating and retractable mechanism that can be flipped and retracted, so that the dust suction head can be adjusted in height and angle according to the position of the welding point. By placing the dust suction head obliquely above the welding point during welding, the collision between the dust suction head and the welding gun is avoided, ensuring the continuity of the welding work. At the same time, the dust suction head is close to the welding position, which can effectively remove the smoke and harmful gases generated during the welding process, improve the welding environment, improve the welding quality, and solve the problem that the existing dust suction device is fixed in position and has a poor dust suction effect.

[0018] Thirdly, the equipment is designed with a retractable vacuum head position control mechanism. After the welding of a single workpiece is completed, the vacuum head automatically approaches the welding point to cool down the welding part, preventing the workpiece from being deformed due to high temperature, thereby improving product quality. At the same time, when unloading, the cooling effect of the vacuum head reduces the temperature of the workpiece surface, reduces the risk of burns to operators, and improves the safety of the equipment. This design overcomes the shortcomings of the prior art that the welding part cannot be effectively cooled, which poses a safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a three-dimensional structural diagram of the installation of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the welding tool cabinet of the present invention; Figure 3 It is a left-side structural schematic diagram of the welding tool cabinet of the present invention; Figure 4 It is a schematic diagram of the installation structure of the dust collection mechanism and the rotating and telescopic mechanism of the present invention; Figure 5 It is a schematic diagram of the installation structure of the rotary telescopic mechanism of the present invention; Figure 6 A schematic diagram of a vacuum cleaner head according to the present invention; Figure 7 For the present invention Figure 4 Schematic diagram of the enlarged three-dimensional structure of region A; Figure 8 For the present invention Figure 4 A magnified stereoscopic schematic diagram of area B; Fig. 9 It is a schematic diagram of the three-dimensional structure of the tooling mechanism of the present invention.

[0020] Among them, 1. Robotic arm; 2. Laser welding cabinet; 3. Welding gun; 4. Welding tool cabinet; 41. Turntable; 42. Isolation plate; 43. Protective lens; 44. Tool mechanism; 441. Tool seat; 442. Support table; 443. Pneumatic pressure plate; 5. dust suction mechanism; 51. column; 52. slide; 53. beam; 54. locking bolt; 55. dust suction cylinder; 56. limit plate; 57. horizontal cylinder; 58. bump; 59. rotating shaft; 510. first gear; 511. second gear; 512, control cylinder; 513, tooth plate; 6, rotating and telescopic mechanism; 61, rotating cylinder; 62, tooth ring; 63, docking cylinder; 64, boss; 65, telescopic cylinder; 66, dust collector head; 67, fixing rod; 68, spring; 69, ear plate; 7. Telescopic control cabinet mechanism; 71. Fixed wheel; 72. Pull rope; 73. Counterweight block; 74. Control motor; 75. Friction control wheel. DETAILED DESCRIPTION

[0021] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Embodiment 1: See also Figure 1-9A four-station rotary welding processing equipment for welding includes a mechanical arm 1, a laser welding cabinet 2 and a welding tool cabinet 4; a welding gun 3 is installed at the end of the mechanical arm 1, and the welding gun 3 is used to accurately weld the workpiece, and can realize multi-angle and multi-directional welding operations to meet the welding requirements of complex workpieces; the laser welding cabinet 2 is placed on one side of the mechanical arm 1, and is equipped with a laser generator, a cooling system and a control module, and is connected to the welding gun 3 through a hose, providing the welding gun 3 with stable laser energy and control signals, ensuring welding quality and efficiency, improving production efficiency, and solving the problem of low efficiency of welding equipment in the prior art; 4 is fixedly placed on the front side of the robot arm 1, and a turntable 41 is rotatably installed on the upper surface of the welding tool cabinet 4. The turntable 41 is connected to the welding tool cabinet 4 through a bearing and can rotate smoothly to realize continuous processing of the workpiece; an isolation plate 42 is horizontally arranged on the surface of the turntable 41, and the isolation plate 42 divides the turntable 41 into two semicircles, which plays the role of isolating the welding area and the loading and unloading area, preventing the sparks and smoke generated during welding from affecting the operator and ensuring the safety of the operator; four tooling mechanisms 44 are symmetrically arranged on the surface of the isolation plate 42, and two tooling mechanisms 44 are arranged in a group on both sides of the isolation plate 42, respectively, for fixing the workpiece to be welded, ensuring the stability of the workpiece during the welding process, and improving the welding quality; a protective lens 43 is embedded on the surface of the isolation plate 42, and the protective lens 43 is made of high temperature resistant and radiation-proof materials, which is convenient for the front staff to observe the welding situation at the rear through the protective lens 43, so as to realize the monitoring of the welding process, and solve the problem that the welding process cannot be monitored in real time in the prior art; A dust collecting mechanism 5 is also fixedly arranged on the upper surface of the 4, and the dust collecting mechanism 5 includes two vertically arranged columns 51, and the two columns 51 are respectively arranged on both sides of the rotating disk 41, and the columns 51 are used to support the upper structure of the dust collecting mechanism to provide sufficient strength and stability; a crossbeam 53 is installed above the two columns 51, and the crossbeam 53 is suspended above the rotating disk 41 and parallel to the position of the isolation plate 42 during welding, and the crossbeam 53 is used to install other components of the dust collecting device, and plays a connecting and supporting role; a dust collecting cylinder 55 is vertically fixed at the center of the crossbeam 53, and the dust collecting cylinder 55 is used to collect smoke and harmful gases generated during welding. The top of the dust collecting cylinder 55 can be connected to an exhaust pump to form a negative pressure environment to ensure that the smoke is effectively sucked out, which solves the problem that the smoke cannot be removed in time in the prior art; a cross cylinder 57 is arranged at the bottom of the dust collecting cylinder 55, and the cross cylinder 57 extends horizontally and is located above the rotating disk 41. The two ends of the cross cylinder 57 are connected with a rotating telescopic mechanism 6 to realize the smoke suction of different workstations, expand the dust suction range, and improve the dust suction effect; Both ends of the horizontal cylinder 57 are provided with a rotating telescopic mechanism 6, which includes a horizontally arranged rotating cylinder 61, which can rotate around its own axis to realize the up and down flipping of the dust suction head 66, so as to avoid affecting the normal operation of the equipment when the turntable 41 rotates, and solves the problem that the dust suction device in the prior art hinders the operation of the equipment; a docking cylinder 63 is vertically arranged at the end of the rotating cylinder 61, and the docking cylinder 63 is used to connect the rotating cylinder 61 and the telescopic cylinder 65, and can adjust the angle and height to meet the needs of different welding positions; a dust suction head 66 is slidably installed at the front end of the docking cylinder 63, and the dust suction head 66 is connected to the docking cylinder 63 through the telescopic cylinder 65, and can be telescoped along the axial direction of the docking cylinder 63, so as to facilitate the adjustment of the position of the dust suction head 66; the dust suction head 66 corresponds to the tooling mechanism 44, and can effectively absorb the smoke generated during welding, improve the cleanliness of the welding environment, and protect the health of the operators; Two telescopic control mechanisms for controlling the extension and retraction of the dust suction head 66 are symmetrically arranged on the upper surface of the crossbeam 53. The telescopic control mechanism includes fixed wheels 71 and control motors 74 fixed on both sides of the crossbeam 53. The fixed wheels 71 are used to guide the movement direction of the pull rope 72. The control motor 74 applies friction force to the pull rope 72 through the friction control wheel 75 to achieve telescopic control of the dust suction head 66. Through the telescopic control mechanism, the distance between the dust suction head 66 and the welding point can be dynamically adjusted according to the needs of the welding process to prevent the dust suction head 66 from colliding with the welding gun 3, thereby solving the problem that the dust suction head is fixed in position and cannot be adjusted in the prior art. See also Figure 3-5 The surface of the column 51 is provided with a slide groove 52, which extends along the axial direction of the column 51, which is convenient for adjusting the height of the crossbeam 53; locking bolts 54 are screwed on both ends of the crossbeam 53, and the locking bolts 54 pass through the slide groove 52 and are threadedly connected to the column 51. The position of the crossbeam 53 can be fixed or loosened by rotating the locking bolts 54, so as to adjust the height of the crossbeam 53 to meet the welding requirements of different workpieces, thereby solving the problem of height fixing of the dust suction device in the prior art; the top of the dust suction cylinder 55 is connected to the dust suction device, which can be an exhaust pump or a dust collector to form a negative pressure environment to ensure that the welding smoke is effectively sucked away; a limit plate 56 is set on the surface of the dust suction cylinder 55, and the limit plate 56 is fixed to the center of the upper surface of the crossbeam 53 by bolts, which plays a role in fixing the position of the dust suction cylinder 55 to prevent it from being displaced during work and ensure the stability of the dust suction effect; See also Figure 5, the front surface of the horizontal cylinder 57 is symmetrically provided with protrusions 58, the inner side of the protrusions 58 rotates through the rotating shaft 59, and the rotating shaft 59 is connected to the protrusions 58 through the bearing and can rotate smoothly; the rotating shaft 59 is parallel to the axis of the horizontal cylinder 57, and is used to transmit power to realize the flipping movement of the rotating telescopic mechanism 6; the end of the rotating shaft 59 close to the dust collection cylinder 55 is provided with a second gear 511, and the second gear 511 is meshed with the toothed plate 513 to receive power from the control cylinder 512; the other end of the rotating shaft 59 is provided with a first gear 510, and the first gear 510 is meshed with the gear ring 62 on the rotating cylinder 61. Through gear transmission, the rotation control of the rotating cylinder 61 is realized, which solves the problem that the angle of the dust collection head 66 cannot be flexibly adjusted in the prior art; See also Figure 4-5 A control cylinder 512 is vertically fixed to the front surface of the dust suction cylinder 55, and the control cylinder 512 is placed under the crossbeam 53 to avoid occupying the upper space; a tooth plate 513 is downwardly installed at the output end of the control cylinder 512, and the tooth plate 513 moves in the vertical direction; the tooth plate 513 is respectively engaged with the two second gears 511, and the tooth plate 513 is driven to move up and down through the telescopic movement of the control cylinder 512, thereby driving the second gear 511 to rotate; through gear transmission, the flipping control of the rotating telescopic mechanism 6 is realized, and the height and angle of the dust suction head 66 are accurately adjusted to meet the needs of the welding process, prevent the dust suction head 66 from colliding with the welding gun 3, and ensure the safe operation of the equipment; See also Figure 5-6 The rotating cylinder 61 and the horizontal cylinder 57 are connected to form a continuous air passage, ensuring that the smoke and dust can be smoothly sucked into the dust collection device; a gear ring 62 is provided at the end of the rotating cylinder 61, and the gear ring 62 is meshed with the first gear 510, and the turning movement of the rotating cylinder 61 is realized through gear transmission; a telescopic cylinder 65 is slidably installed at the end of the docking cylinder 63, and the telescopic cylinder 65 can be telescoped along the axial direction of the docking cylinder 63, so as to facilitate the adjustment of the position of the dust collection head 66; the dust collection head 66 is fixed at the end of the telescopic cylinder 65, and is trumpet-shaped, which expands the dust collection range, improves the smoke and dust collection efficiency, and solves the problem of poor dust collection effect in the prior art; See also Figure 5-8 , bosses 64 are provided at both ends of the docking tube 63, and the bosses 64 are used to install fixing rods 67, which provide guiding and limiting functions for the telescopic tube 65; a fixing rod 67 is symmetrically provided on the side of the telescopic tube 65 surface away from the dust collector head 66, and the fixing rod 67 passes through the boss 64 and can slide axially; a spring 68 is sleeved on the surface of the fixing rod 67, and the spring 68 is placed between the telescopic tube 65 and the boss 64 to provide an outward elastic force, so that the telescopic tube 65 automatically extends when not subject to external force, keeping the dust collector head 66 at the front side; when the position of the dust collector head 66 needs to be adjusted, the telescopic tube 65 is pulled into the docking tube 63 by the telescopic control mechanism to compress the spring 68, so as to adjust the position of the dust collector head 66, thereby solving the problem of fixing the position of the dust collector head 66 in the prior art; See also Figure 6-7 , an ear plate 69 is welded at the center of the upper surface of the telescopic cylinder 65, and the ear plate 69 is used to connect the pull rope 72 to transmit the power of the control motor 74; the telescopic control mechanism includes fixed wheels 71 fixed on both sides of the crossbeam 53, and the fixed wheels 71 correspond to the position of the telescopic cylinder 65, and are used to guide the movement direction of the pull rope 72 to ensure that the pull rope 72 runs smoothly; the surface of the ear plate 69 is connected to the pull rope 72, and the pull rope 72 passes through the two fixed wheels 71 respectively, and the rear end is connected to a counterweight block 73, and the counterweight block 73 provides constant tension to ensure that the pull rope 72 is always in a taut state to avoid inaccurate control caused by relaxation; through the traction of the pull rope 72, the telescopic cylinder 65 is accurately controlled to meet the dynamic adjustment requirements of the position of the vacuum head 66 during welding; See also Figure 6-7 , the crossbeam 53 is fixed with a control motor 74, and a friction control wheel 75 is installed at the output end of the control motor 74. The friction control wheel 75 is tangent to one of the fixed wheels 71, and the pull rope 72 passes between the friction control wheel 75 and the fixed wheel 71. The control motor 74 applies friction to the pull rope 72 through the friction control wheel 75, pulls the pull rope 72 to move, thereby controlling the extension and retraction of the telescopic cylinder 65; the other fixed wheel 71 is used to guide the pull rope 72 to prevent friction caused by contact with the crossbeam 53 during movement. During the welding process, when the dust suction head 66 needs to be away from the welding point, the control motor 74 is started to drive the friction control wheel 75 to rotate, pull the pull rope 72, compress the spring 68, and make the dust suction head 66 retreat; after the welding is completed, the control motor 74 stops working, the spring 68 and the counterweight block 73 make the telescopic cylinder 65 return to its original position, and the dust suction head 66 approaches the welding point to cool the welding part and remove the smoke and dust, which solves the problem that the welding part cannot be cooled in the prior art; See also Fig. 9 The tooling mechanism 44 includes a support platform 442 and a pneumatic pressure plate 443. The support platform 442 is used to support the workpiece to be welded. A tooling seat 441 is arranged on the top. The tooling seat 441 is designed according to the shape and size of the workpiece to ensure that the workpiece is accurately positioned and firmly fixed during the welding process; the output end of the pneumatic pressure plate 443 is placed above the tooling seat 441. It is driven by a cylinder and can move up and down to press and fix the workpiece to prevent displacement during the welding process and improve the welding quality; through the design of the pneumatic pressure plate 443, the workpiece is quickly clamped and released, the efficiency of loading and unloading is improved, and the problems of unstable fixation of the workpiece and inconvenience in loading and unloading in the prior art are solved.

[0023] Embodiment 2: This embodiment provides a specific solution to the technical problem of improving production efficiency and achieving synchronization of loading and unloading of workpieces and welding processes.

[0024] like Figure 1-9As shown, the welding equipment uses a turntable 41 that can rotate 180 degrees. The turntable 41 is driven by a motor. The motor model is the SGMGV-09ADC6C servo motor of the YASKAWA brand with a rated power of 0.85kW, which can accurately control the rotation angle of the turntable. An isolation plate 42 is provided on the turntable 41, which divides it into two semicircular areas. Two tooling mechanisms 44 are provided in each semicircular area, for a total of four tooling mechanisms. The tooling mechanism 44 includes a support table 442, a tooling seat 441 and a pneumatic pressure plate 443. The pneumatic pressure plate 443 uses the cylinder model CDQ2A32-50DZ of SMC, which provides a stable clamping force to ensure accurate positioning of the workpiece during the welding process.

[0025] During the operation, the staff installs the workpiece to be welded on the two tooling mechanisms 44 on the front side and fixes the workpiece through the pneumatic pressure plate 443. Then, the controller controls the turntable 41 to rotate 180 degrees, so that the tooling mechanism loaded with the workpiece moves to the back side and enters the welding area. At this time, the robot arm 1 carries the welding gun 3 to automatically weld the workpiece. The robot arm 1 uses the IRB 1410 six-axis robot of ABB, and the welding gun 3 uses the YLR-500-WC laser welding gun of IPG, with a laser power of 500W and a wavelength of 1070nm, which can meet the welding requirements of most metal materials.

[0026] While welding, the front tooling mechanism 44 returns to the front of the worker, who can continue to load and unload the next batch of workpieces. This cycle achieves synchronization between loading and unloading and the welding process, reducing the standby time of the equipment. After actual production testing, compared with traditional single-station welding equipment, the production efficiency is increased by about 40%.

[0027] Embodiment 3: In view of the problem that the existing dust suction device has a fixed position and poor dust suction effect, this embodiment provides an adjustable dust suction mechanism, improves the welding environment, and improves the welding quality.

[0028] The dust collecting mechanism 5 includes a height-adjustable crossbeam 53, which is fixed to the column 51 by locking bolts 54 at both ends. The column 51 is 2 meters high and made of Q235 steel, which has good mechanical strength. A dust collecting cylinder 55 is vertically fixed on the crossbeam 53. The dust collecting cylinder 55 has a diameter of 200 mm and is connected to an exhaust pump. The exhaust pump is a VARIOT 1.0 model of the German Keller Company, with an air volume of up to 1000 cubic meters per hour, which can form a negative pressure of -2000 Pa inside the dust collecting cylinder.

[0029] The bottom of the dust collection cylinder 55 is connected to the horizontal cylinder 57, and the two ends of the horizontal cylinder 57 are installed with a rotating telescopic mechanism 6. The rotating telescopic mechanism 6 realizes the flipping and height adjustment of the dust collection head 66 through the control cylinder 512 and gear transmission. The control cylinder 512 adopts the model ADN-32-100-APA of FESTO Company, with a stroke of 100mm, which can accurately control the up and down movement distance of the tooth plate 513, thereby adjusting the angle and height of the dust collection head 66.

[0030] The dust collector head 66 is connected to the docking tube 63 through the telescopic tube 65. A spring 68 is provided inside the telescopic tube 65 to provide an outward elastic force. The pull rope 72 is connected to the ear plate 69 of the telescopic tube 65. The pull rope 72 is made of high-strength aramid fiber with a diameter of 5 mm and can withstand a tensile force of 500 N. The control motor 74 drives the friction control wheel 75 to control the movement of the pull rope 72 to achieve the telescopic adjustment of the dust collector head 66.

[0031] During welding, the dust suction head 66 is placed obliquely above the welding point, about 150 mm away from the welding point, to avoid collision with the welding gun 3. The dust suction head 66 is trumpet-shaped, with an inlet diameter of 100 mm, and can effectively remove the smoke generated by welding. After environmental testing, the smoke concentration in the welding area is reduced to below 2 mg / m³, which meets the requirements of the national occupational health standard GBZ 2.1-2019 and ensures the health of operators.

[0032] Embodiment 4: This embodiment provides a solution for cooling the welding area to address the potential safety hazard that the workpiece temperature is high after welding and the operator may be burned.

[0033] When the welding of a single workpiece is completed, the control motor 74 stops applying the pulling force, and the spring 68 causes the dust suction head 66 to automatically approach the welding point, and the distance is shortened to 50 mm. At this time, the exhaust pump continues to work, and the dust suction head 66 not only continues to absorb the residual smoke and dust, but also accelerates the air flow of the welding part, which has the effect of cooling down.

[0034] In order to verify the cooling effect, the surface temperature of the workpiece with and without cooling treatment was compared. Using an infrared thermometer to measure immediately after welding, the surface temperature of the workpiece without cooling treatment was 150°C, while the surface temperature of the workpiece with cooling treatment dropped to 80°C. According to GB / T 4208-2017, the temperature of 80°C is within the allowable safe touch range, avoiding the risk of burns to operators when unloading.

[0035] In addition, lowering the temperature of the welding part also helps prevent the workpiece from deforming due to high temperature, ensuring the quality stability of the product. After actual production verification, the dimensional accuracy of the workpiece has increased by about 30% and the defective rate has decreased by 25%.

[0036] Working principle: When in use, the controller controls the turntable 41 and each cylinder, and the turntable 41 rotates 180° at a time. The worker installs the workpiece to be welded on the two tooling mechanisms 44 on the front side, and fixes the workpiece through the pneumatic pressure plate 443, and then rotates 180 degrees so that the installed workpiece is placed on the rear side. At this time, the robot arm 1 and the welding gun 3 can cooperate to perform automatic welding, and rotate to the two tooling mechanisms 44 on the front side, and workers can load and unload materials to improve the efficiency of loading and unloading during welding. During this process, the worker on the front side can observe the welding situation at the rear through the protective lens 43; Adjust the crossbeam 53 to a suitable height, and tighten it by screwing the locking bolts 54 on both sides, connect the top of the dust suction cylinder 55 to the exhaust pump, so that negative pressure is formed inside the dust suction cylinder 55. At this time, the dust suction cylinder 55, the cross cylinder 57, the rotating telescopic mechanism 6 and the dust suction cylinder 55 are used to realize the smoking work of the welding station. Due to the existence of the spring 68, the telescopic cylinder 65 has an outward force, and then it is placed at the front when it is not subject to external force. The pull rope 72 is kept in a taut state by the counterweight block 73. When working, the tooth plate 513 is controlled to move upward by the control cylinder 512 to drive the two second gears 511 to rotate, and the rotary telescopic mechanism 6 is turned downward by power transmission. The height of the dust suction head 66 and the inclination angle of the docking tube 63 are controlled by controlling the upward movement distance of the tooth plate 513, so that the dust suction head 66 is close to the welding position to absorb the smoke generated during welding and improve the air flow at the welding point to improve the cooling effect at the welding point. Before the turntable 41 rotates, the tooth plate 513 can be controlled to move downward by the control cylinder 512 to make the rotary telescopic mechanism 6 rotate in the opposite direction, so that the docking tube 63 is placed horizontally on the isolation plate 42 without affecting the rotation of the turntable 41. During the welding process, in order to prevent the dust suction head 66 from colliding with the welding gun 3, the position of the dust suction head 66 should not be close to the welding point, but can be placed obliquely above the welding point. However, after the welding of a single workpiece is completed, the dust suction head 66 is too far away and is not conducive to cooling the welding point. At this time, the dust suction head 66 can be brought close to the welding point when the rotating telescopic mechanism 6 is lowered. When the welding gun 3 welds the workpiece on one side, the control motor 74 corresponding to this workpiece is started to pull the rear side of the pull rope 72 through friction, so that the telescopic tube 65 contracts toward the inside of the docking tube 63 to increase the distance between the dust suction head 66 and the welding point. At this time, the spring 68 will be squeezed and force accumulated. When the welding of a single workpiece is completed, the control motor 74 stops working and the dust suction head 66 returns to its position to be close to the welding point. At this time, the wind force sucked in can cool the welding point to prevent burns to the staff during material feeding.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A four-station rotary welding processing equipment for welding, comprising a mechanical arm (1), a laser welding cabinet (2) and a welding tool cabinet (4), characterized in that: A welding gun (3) is installed at the end of the mechanical arm (1); the laser welding cabinet (2) is placed on one side of the mechanical arm (1) and is connected to the welding gun (3) via a hose; The welding tool cabinet (4) is fixedly placed on the front side of the robot arm (1); a turntable (41) is rotatably mounted on the upper surface of the welding tool cabinet (4); an isolation plate (42) is transversely arranged on the surface of the turntable (41); the isolation plate (42) divides the turntable (41) into two semicircles; four tooling mechanisms (44) are symmetrically arranged on the surface of the isolation plate (42); two tooling mechanisms (44) are arranged in a group on both sides of the isolation plate (42); and a protective lens (43) is embedded on the surface of the isolation plate (42); A dust collecting mechanism (5) is also fixedly arranged on the upper surface of the welding tool cabinet (4), and the dust collecting mechanism (5) comprises two vertically arranged columns (51), the two columns (51) are respectively placed on the surface of two sides of the turntable (41), a crossbeam (53) is installed above the two columns (51), the crossbeam (53) is suspended above the turntable (41) and is parallel to the position of the isolation plate (42) during welding, a dust collecting cylinder (55) is vertically fixed at the center of the crossbeam (53), and a cross cylinder (57) is arranged at the bottom of the dust collecting cylinder (55); Both ends of the horizontal cylinder (57) are provided with a rotating and telescopic mechanism (6), the rotating and telescopic mechanism (6) comprising a rotating cylinder (61) arranged horizontally, a docking cylinder (63) arranged vertically at the end of the rotating cylinder (61), a dust collecting head (66) slidably mounted at the front end of the docking cylinder (63), and the dust collecting head (66) corresponds to the tooling mechanism (44); Two telescopic control mechanisms (7) for controlling the telescopic movement of the dust collector head (66) are also symmetrically arranged on the upper surface of the crossbeam (53).

2. The four-station rotary welding processing equipment for welding according to claim 1 is characterized in that: A slide groove (52) is provided on the surface of the upright column (51), locking bolts (54) are screwed on both ends of the cross beam (53), and the locking bolts (54) pass through the slide groove (52). The top of the dust collection cylinder (55) is connected to the dust collection device, and a limit plate (56) is provided on the surface of the dust collection cylinder (55), and the limit plate (56) is fixed to the center of the upper surface of the cross beam (53) by bolts.

3. The four-station rotary welding processing equipment for welding according to claim 2 is characterized in that: The front surface of the horizontal cylinder (57) is symmetrically provided with protrusions (58), the inner side of the protrusions (58) rotates through a rotating shaft (59), the rotating shaft (59) is parallel to the axis of the horizontal cylinder (57), a second gear (511) is provided at one end of the rotating shaft (59) close to the dust collection cylinder (55), and a first gear (510) is provided at the other end of the rotating shaft (59).

4. The four-station rotary welding processing equipment for welding according to claim 3 is characterized in that: A control cylinder (512) is vertically fixed to the front surface of the dust collection cylinder (55); the control cylinder (512) is placed below the crossbeam (53); a toothed plate (513) is mounted downwardly at the output end of the control cylinder (512); the toothed plate (513) is respectively meshed with the two second gears (511).

5. The four-station rotary welding processing equipment for welding according to claim 4 is characterized in that: The rotating cylinder (61) is connected to the interior of the horizontal cylinder (57); a toothed ring (62) is provided at the end of the rotating cylinder (61); the toothed ring (62) and the first gear (510) are meshed with each other; a telescopic cylinder (65) is slidably mounted at the end of the docking cylinder (63); the dust collector (66) is fixed to the end of the telescopic cylinder (65); and the dust collector (66) is horn-shaped.

6. The four-station rotary welding processing equipment for welding according to claim 5 is characterized in that: Bosses (64) are provided at both end portions of the docking tube (63); a fixing rod (67) is symmetrically provided on the side of the surface of the telescopic tube (65) facing away from the dust collector head (66); the fixing rod (67) passes through the boss (64); a spring (68) is sleeved on the surface of the fixing rod (67); the spring (68) is placed between the telescopic tube (65) and the boss (64).

7. The four-station rotary welding processing equipment for welding according to claim 5 is characterized in that: An ear plate (69) is welded at the center of the upper surface of the telescopic cylinder (65), the telescopic control mechanism (7) comprises fixed wheels (71) fixed on both sides of the crossbeam (53), the fixed wheels (71) correspond to the positions of the telescopic cylinder (65), and a pull rope (72) is connected to the surface of the ear plate (69).

8. The four-station rotary welding processing equipment for welding according to claim 7 is characterized in that: The crossbeam (53) is fixed with a control motor (74), and a friction control wheel (75) is installed at the output end of the control motor (74). The friction control wheel (75) is in contact with one of the fixed wheels (71). The pull rope (72) passes between the fixed wheel (71) and the friction control wheel (75) and is tangent to the fixed wheel (71) and the friction control wheel (75) respectively. The pull rope (72) is squeezed by the fixed wheel and the friction control wheel (75).

9. The four-station rotary welding processing equipment for welding according to claim 1, characterized in that: The tooling mechanism (44) comprises a support platform (442) and a pneumatic pressing plate (443); a tooling seat (441) is arranged on the top of the support platform (442); and an output end of the pneumatic pressing plate (443) is placed above the tooling seat (441).

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